Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual a média da parcela do vencedor ($) para um Score de 281 (−7), e um Jogador de hale irwin, e um Ano menor que 1983?
 ###Tabelas: CREATE TABLE virginia_counties_and_cities_ranked_by_per_capita_income (virginia_counties_and_cities_ranked_by_per_capita_income_id AUTO_INCREMENT PRIMARY KEY, County or City VARCHAR, Per capita income VARCHAR, Median household income VARCHAR, Median family income VARCHAR, Population INT, Number of households INT) CREATE TABLE summary_of_election_results_1973_-_2003 (summary_of_election_results_1973_-_2003_id AUTO_INCREMENT PRIMARY KEY, Election INT, Labour INT, Conservative INT, Liberal INT, Social Democratic Party INT, Social and Liberal Democrats/ Liberal Democrats INT, Independent INT, Green INT, Other VARCHAR, Control VARCHAR) CREATE TABLE winners_and_honorees (winners_and_honorees_id AUTO_INCREMENT PRIMARY KEY, Year INT, Player VARCHAR, Country VARCHAR, Score VARCHAR, Margin of victory VARCHAR, Winner's share ( $ ) INT) CREATE TABLE main_sites (main_sites_id AUTO_INCREMENT PRIMARY KEY, Transmitter VARCHAR, Service area VARCHAR, Radio 1 (MHz) VARCHAR, 2FM (MHz) VARCHAR, RnaG (MHz) VARCHAR, Lyric FM (MHz) VARCHAR, ERP (kW) VARCHAR) CREATE TABLE head_to_head (head_to_head_id AUTO_INCREMENT PRIMARY KEY, Tournament VARCHAR, Matches INT, Wins Olimpia INT, Empates INT, Wins Cerro INT, Goals Olimpia INT, Goals Cerro INT)  
SELECT AVG Winner's share ( $ ) FROM winners_and_honorees WHERE Score = 281 (−7) AND Player = hale irwin AND Year < 1983